With reference to ‘LiFi’, recently in the news, which of the following statements is/are correct?1. It uses light as the medium for high-speed data transmission.2. It is a wireless technology and is several times faster than ‘WiFi’.Select the correct answer using the code given below.
✓ Correct answer: c) Both 1 and 2
ExplanationStatement 1 is correct: LiFi (Light Fidelity) uses visible light, ultraviolet, or infrared light to transmit data.This technology works through light-emitting diodes (LEDs), which modulate light signals at extremely high speeds to carry information.Unlike traditional radio frequency-based wireless systems, LiFi leverages the light spectrum for communication.Statement 2 is correct: LiFi is a wireless communication technology that does not require cables for data transmission.In laboratory conditions, it has demonstrated speeds significantly faster than WiFi, reaching up to 224 Gbps.However, its performance depends on line-of-sight and is more suitable for indoor environments.82
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